Alekssander: Could you give your system specs, including OS and any kind of software with a dongle or a software lock, like P5 or Max? As for it only addressing 1.66 gigs, don't forget that whatever OS you are using has to have some space, as well as any other TSR or background app. And when you are hitting the swapfile hard, as in a huge render, it needs even more RAM. You're talking about 840 megs free for OS and anything else you have. That may be a lot....or it may not.